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Coal blending method suitable for Shell pulverized coal pressurized gasification

A pulverized coal pressurized gasification and coal blending technology, which is applied in the coal blending field of Shell pulverized coal pressurized gasification coal, to achieve the effects of reducing the probability of breakdown shutdown, overcoming low economic efficiency, increasing calorific value and fixed carbon content

Active Publication Date: 2014-10-29
GUIZHOU TIANFU CHEM
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008]The existing method to solve the high ash content of shell pulverized coal pressurized gasification raw coal is mainly to use coal washing or clean coal to reduce the ash content of coal, but this method is costly , It is necessary to build another coal washing workshop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take Guizhou coal with high ash content, the blending ratio is 95%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 5%, and the blending is even. The heat Qnet,ar, and the fixed carbon FCar received were 21.08%, 6029Kcal / Kg, and 67.33%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1668.13NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 649.23NM 3 / t standard coal. CO in effective gas composition is 66%, H 2 17%.

Embodiment 2

[0029] Take Guizhou coal with high ash content, the blending ratio is 90%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 10%, and the blending is even. The heat Qnet, ar, and the received base fixed carbon FCar are 20.10%, 6159Kcal / Kg, and 69.65%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1710.57NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 643.25NM 3 / t standard coal. CO in effective gas composition is 66%, H 2 18%.

Embodiment 3

[0031] Take Guizhou coal with high ash content, the blending ratio is 84%, petroleum coke-Shandong Yantai Longkou petroleum coke, the blending ratio is 16%, and the blending is even. The heat Qnet, ar, and the received base fixed carbon FCar are 18.73%, 6228Kcal / Kg, and 68.85%, respectively. At this time, the effective gas output per ton of standard coal of the gasifier is 1781.74NM 3 / t standard coal, the oxygen consumption per ton of standard coal is 638.43NM 3 / t standard coal. CO in effective gas composition is 67%, H 2 18%.

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Abstract

A coal blending method for coal used in pressurization gasification of Shell pulverized coal. In this method, coal with ash content greater than 21.08% is mixed with petroleum coke, and requirements for dosages of the coal and the petroleum coke are that ash content in the mixture after uniform mixing is lower than 21.08%. The blended coal can improve effective gas production of a ton of standard coal in gasification of Shell pulverized coal, reduce oxygen consumption of a ton of standard coal, and change CO and H2 components in effective gas components to be more beneficial to use of an ammonia / alcohol co-production device. At the same time, the blended coal can reduce load of an ash and slag processing device of a Shell pulverized coal gasification device.

Description

technical field [0001] The invention relates to a coal blending method, in particular to a coal blending method suitable for shell pulverized coal pressurized gasification coal. Background technique [0002] Shell pulverized coal pressurized gasification technology is currently the world's advanced second-generation coal gasification technology, which has remarkable characteristics such as wide adaptability of coal types, large single-series capacity, high gasification temperature, long operation period, and good environmental benefits. [0003] The raw coal is crushed and sent to the coal mill by the transportation facility. In the coal mill, the raw coal is ground into coal powder (by mass, 90% of which has a particle size of <100μm) and dried. The coal powder is often pressed into the coal powder warehouse, pressurized The pulverized coal bin and feed bin are used to send the pulverized coal to the nozzle of the gasifier by high-pressure nitrogen. The oxygen from the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46C10J3/72
CPCC10J3/506C10J2300/093C10J2300/0943C10J2300/0906
Inventor 何浩明杨三可郭丹李华杨锦成李发中黄世刚陈忠阳王波陈静汪飞
Owner GUIZHOU TIANFU CHEM
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